12561732546135 has 16 divisors (see below), whose sum is σ = 20132325964800. Its totient is φ = 6688406060960.

The previous prime is 12561732546133. The next prime is 12561732546169. The reversal of 12561732546135 is 53164523716521.

It is not a de Polignac number, because 12561732546135 - 2¹ = 12561732546133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12561732546133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699030111 + ... + 699048080.

It is an arithmetic number, because the mean of its divisors is an integer number (1258270372800).

Almost surely, 2^{12561732546135} is an apocalyptic number.

12561732546135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12561732546135 is a deficient number, since it is larger than the sum of its proper divisors (7570593418665).

12561732546135 is a wasteful number, since it uses less digits than its factorization.

12561732546135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398078798.

The product of its digits is 4536000, while the sum is 51.

The spelling of 12561732546135 in words is "twelve trillion, five hundred sixty-one billion, seven hundred thirty-two million, five hundred forty-six thousand, one hundred thirty-five".